I just installed the billet 034 engine and trans side mounts. With my hpa subframe side mount the car is extremely connected. Uncomfortably so for most people I'd say, but I love it.
No, there are two side mounts on the engine and trans (one by your windshield fluid resevoir and the other under the battery) and then the rear pendulum mount. If you can physically see a mount failing odds are they are all going. The fact that you can see it falling apart is even worse, I highly suggest replacing all 3 or at the very least the engine and trans mounts on the sides asap.